Finding the Fourth Proportional to 16,407.72, 22,642.80 and 9,333.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,407.72 : 22,642.80 = 9,333.72 : x
2. Step 2: Convert to fraction form
   16,407.72/22,642.80 = 9,333.72/x
3. Step 3: Cross multiply
   16,407.72x = 22,642.80 × 9,333.72
4. Step 4: Simplify right side
   16,407.72x = 211,341,555.22
5. Step 5: Solve for x
   x = 211,341,555.22/16,407.72
6. Step 6: Final answer
   x = 12,880.62